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// Other services

Port 2709: Supermon

Port 2709 is assigned by IANA to supermon (Supermon).

2709

How supermon works

Other services
client:2709supermonresponse client:2709supermonresponse

The client sends a request to port 2709 and the supermon service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 2709 dangerous?

We have no specific security note for port 2709. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 2709

ServicePortTransportDescriptionReferenceUpdated
supermon 2709 TCP, UDP Supermon - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2709, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2709'      # process listening on 2709
sudo lsof -nP -i :2709

macOS

sudo lsof -nP -i :2709

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2709 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2709
netstat -ano | findstr :2709

From another machine

nmap -p 2709 -sV <host>
sudo nmap -sU -p 2709 <host>
nc -zv <host> 2709

Block it in the firewall

sudo ufw deny 2709/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2709" -Direction Inbound -LocalPort 2709 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2709 used for?

Port 2709 is assigned by IANA to supermon (Supermon).

Is port 2709 TCP or UDP?

Port 2709 is registered for TCP and UDP.

Is it safe to open port 2709?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 2709 is open?

On Linux run "ss -ltnup 'sport = :2709'", on macOS "lsof -nP -i :2709", and on Windows "netstat -ano | findstr :2709" to see the local process. From another machine, "nmap -p 2709 <host>" shows whether it is reachable.

05 Related
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